Stocks to Watch: BKS, MSFT, SUN & More

Barnes & Noble and Microsoft - Barnes & Noble announced Microsoft would invest $300 million to improve the bookstore chain's digital and college businesses.

Sunoco - Energy TransferPartners said it will acquire the oil company in a cash and stock deal worth $5.3 billionin an aim to focus on transporting more crude oil and refined products on the heels of declining natural gas prices.

NYSE Euronext - The exchange's quarterly profit tumbled by almost a third due to a slowdown in trading and costs from its failed merger with Europe's Deutsche Boerse.

Loews - The conglomerate posted better-than-expected quarterly results, thanks to an increase in investment income at its biggest holding CNA Financial .